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- We develop two local quasi-likelihood imputation estimators for mean in a generalized varying-ciefticient model when response variables are missing at random. 摘要本文在响应变量随机缺失时，给出广义变系数模型中响应变量的2个均值拟似然借补估计。
- Soiled dishes were piled at random. 脏碟子胡乱地堆放着。
- data not missing at random mechanism 数据非随机缺失机制
- The boy turned up missing at roll call. 小男孩在点名时不见了。
- The librarian took a book at random from the shelf. 图书管理员从书架上随便拿了一本书。
- Chose a card at random from the deck. 从一副牌中任意选出一张
- By mere chance or fortune; at random. 碰巧; 胡乱地; 随意地
- She was sorely missed at the reunion. 大家团聚时她不在，非常遗憾。
- The children sat around the table at random. 小孩们随便的围坐在桌子旁边。
- The Estimators of Mean for Semiparametric Varying-Coefficient Models with Response Missing at Random 响应变量随机缺失下的半参变系数模型的均值估计
- He always put his stuff at random. 他总是乱放东西。
- For a second group,the words were listed at random. 对于第二组（试验对象），这些单词是随意排列的。
- To move from place to place,especially at random. 漂移，游荡尤指随意地从一处移动到另一处
- There's a full stop missing at the end of the article. 文章结尾落了个句号。
- The electrons would not be moving around at random. 这些电子就不会杂乱无章地到处跑来跑去。
- She went on, talking somewhat at random. 她继续说下去，有些语无论次。
- He read a great deal-but at random for pleasure. 他读了很多书--都是随心所欲，读着玩的闲书。
- Nodes may be numbered at random. 节点可以随意地编号。
- Names were chosen at random from a list. 名字是从名单中随便点的。
- And the athleticism and power of Michael Essien is missing at the moment. “他们失去了马克莱莱，这个球员对他们十分重要，而目前跑不死的埃辛也将缺阵。”
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries
